I'm using a Magnum .91 FS. Installing a different engine is not hard if u have small hands. I don't. So I had to dremel out a ply bulkhead a bit so that I could reach the blind nuts.

I don't recall much in the way of mods. I think I mounted the servos a bit differently. Just to move them back to help with the CG. And the langind gear was too soft for my poor landings.

Have fun with it.

Mum